I've installed the latest version from the link provided above and can confirm that f.lux no longer continually asks for the location every time it starts up! Thank you for this.

I have however noticed that in the main flux window, when I click the lower-right link saying "Location: 5#.#°N, 0.0°E (Click to set)" the "Where am I" window which pops up still shows the "default" location and the search box is empty (instead of the location I've entered before). I'm pretty certain however that it's actually using my correct location and this is just an presentation issue --- possibly the longitude check occurs here as well?

I'm not sure if restricting it to one screen is possible tbh, though why would you want that anyway? having one screen always blasting blue light at you would nullify what flux is supposed to help with completely I feel.

And about using night view at day, at daytime you can either right click the flux icon and choose "change color to" or access it through the menu, then whatever color level you pick there will be your new daytime setting.

I had this issue as well. For me, it was fixed by deselecting "Disable>for fullscreen apps." With that setting on, f.lux would be at daylight on an alt-tab out of a game, and it would transition (at whatever transition speed had been set in the preferences) back to my nighttime color. With that setting off, colors would still be normal in the game (i.e., f.lux was disabled in the fullscreen game anyway), but the transition back to nighttime color would be instant on an alt-tab. Hope that helps.

And for the developers, you may want to make that transition (when leaving full-screen if the "Disable>for fullscreen" mode is on) instant, though perhaps you have your reasons for making it slow.

@herf thanks but no, it doesn't. When I installed f.lux on computer #1 the icon went straight into the tray next to the volume control icon. When I installed to computer #2 the icon went to the task bar alongside Chrome and Word.
Shutting down and/or waiting does nothing to either f.lux icon. There must be an advanced setting or an auto setting in the download to place the icon in either position or display no icon at all.

@j0nezzz
For temporary solution, how about exit from f.lux while playing movies? Anyway I prefer to see the movies full colour so I have set f.lux always disabled for 'fullscreen apps' -- also not always a movie starts playing fullscreen mode if this feature has not been set before in the player, so maybe the stuttered issue is coming along making scene "fullscreen" after start to play.

Alt+Page Down is the only way to get f.lux to increase the black level.

ClickMonitorDDC can enable you to hold down keys on your keyboard while you scroll to change the brightness too. You can also set up keyboard shortcuts to adjust the brightness in various ways (static values, or increments). You can also create menu entries in ClickMonitorDDC's Notification Area icon context menu.

I will say though that if you need to reduce your brightness THAT MUCH, then that tells me you are using your computer in total darkness. If that's true, then I recommend that you stop doing so and turn on some lights. It is not safe for human eyes for extended periods of time and you might regret it later in life. Plus, turning on some lights makes your eyes more comfortable, and that makes your present more pleasant (rhyme not intended).